Recalls › South Korea › Mercedes-Benz Korea S 350 d, S 350 d 4MATIC, S 400 d, S 400…

Mercedes-Benz Korea S 350 d, S 350 d 4MATIC, S 400 d, S 400 d 4MATIC — recall

Automotive · South Korea · 2025-01-22

Mercedes-Benz S-Class vehicles, NOx sensor may incorrectly detect exhaust gas, exceeding emission limits

Country	South Korea
Category	Automotive
Published	2025-01-22
Manufacturer	Mercedes-Benz Korea
Models affected	S 350 d, S 350 d 4MATIC, S 400 d, S 400 d 4MATIC
Units affected	3114
Defect	The NOx sensor may not correctly detect exhaust gas components, and in such cases, exhaust gas emissions may exceed the standard limits, leading to a recall.
Component	Engine, Other
Remedy	Inspection of upstream and downstream NOx sensors of the SCR catalytic converter, replacement if necessary.
Recall number	5579
Official notice	View source ↗

What this means for sellers

Likely platform / channel actions	OEMs/dealers will run the remedy (repair, replace or refund); component suppliers in the chain may face traceback.
Self-check for comparable products	Check your comparable products' design, materials and QC records against the defect described here.
Rules & standards likely involved	the destination market's product-safety rules and mandatory standards

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